The nurse is preparing a client for an echocardiogram. The client asks what the test can show Which of the following is a correct statement?

A) Obtaining a primary and secondary tubing set:
The primary tubing is used for the intravenous access, and the secondary tubing is attached for administering the blood product. This ensures that the blood transfusion will be delivered effectively, and it is a standard practice to use proper IV tubing for blood products to avoid contamination or complications.

B) Ensuring another licensed personnel is available:
. While it is required that two licensed healthcare professionals verify the blood product before starting the transfusion, this action itself is not contraindicated, it is required. Both individuals should independently check the patient's identification, blood type, and the matching of the blood product before administration. Therefore, the answer to the question should not be about ensuring availability of licensed personnel as this is actually a required safety measure, not contraindicated. The actual contraindications involve actions like using inappropriate fluids for transfusion or mismatching blood.

C) Obtaining 0.9% normal saline solution:
This is appropriate and necessary when preparing for a blood transfusion. Normal saline (0.9%) is the only compatible solution that should be used to flush the IV line before and after the transfusion or to prime the blood tubing. Other solutions, such as lactated Ringer's, can cause clotting when mixed with blood, making saline the only appropriate choice.

D) Checking ABO and Rh status of the donor and recipient:
This is essential and mandatory before administering a blood transfusion. It is critical to ensure that the ABO blood group and Rh factor of the donor and recipient are compatible to prevent hemolytic reactions. This compatibility check must be done every time before administering a transfusion, and it is an integral part of ensuring patient safety.

A. Troponins I & T:
Troponins I and T are the most specific biomarkers for myocardial damage. These proteins are released into the bloodstream when the heart muscle is injured, such as during a myocardial infarction (MI). Troponins remain elevated for a prolonged period (typically up to 1-2 weeks) after myocardial injury, making them highly sensitive for detecting both acute and recent myocardial damage. Because of their high specificity for heart muscle, they are considered the gold standard for diagnosing acute myocardial infarction.

B. Creatine Kinase:
Creatine kinase (CK) is an enzyme found in the heart, brain, and skeletal muscle. While CK-MB (the heart-specific isoenzyme) can be elevated in cases of myocardial damage, it is less specific than troponins because it can also be elevated due to skeletal muscle injury or other conditions. CK-MB levels rise more rapidly than troponins but return to baseline within 48-72 hours, making it less useful for detecting myocardial damage over a longer period.

C. C-Reactive Protein (CRP):
C-Reactive Protein (CRP) is an acute-phase reactant produced by the liver in response to inflammation or tissue injury. While CRP levels can be elevated in various inflammatory conditions, including atherosclerosis, it is not specific to myocardial damage. Elevated CRP is associated with increased risk for cardiovascular events but does not provide specific information about acute myocardial injury, making it less helpful for diagnosing myocardial infarction.

D. Myoglobin:
Myoglobin is an oxygen-binding protein found in both skeletal and cardiac muscle. While it is an early marker that rises rapidly after muscle injury, it lacks specificity for myocardial damage because it is also released from skeletal muscle. Myoglobin levels peak quickly (within 1-4 hours of injury) and return to baseline within 24 hours, so it is not as useful for diagnosing a myocardial infarction or monitoring long-term cardiac injury.